.TH BIHOURLY 8
.SH NAME
bihourly \- track ethernet/ip address pairs
.SH SYNOPSIS
.na
bihourly
.SH "DESCRIPTION"
.B bihourly
is a script that automates the operation of
.B arpsnmp(8)
by executing
.B arpfetch(8)
on a series of hostnames and then
sending the results to
.B arpsnmp(8)
for analysis.
.LP
The result is a report of the current pairings
between ip addresses and the corresponding ethernet address
of the network hardware as reported by
.B snmpwalk(8).
Activity
is logged and noted changes are reported by email.
.LP
In its working directory
.B bihourly
expects a file named
.IR list
which contains a space separated list of hostnames to be queried
and a file named
.IR cname
which holds the SNMP community name by which to query these hosts.
.LP
Contrary to the name,
.B bihourly
does not run twice every hour. It
runs once each time it is invoked. For repeated operation
.B bihourly
must be invoked on a periodic basis by a program like
.B cron(1).
.SH FILES
.na
.nh
.nf
/var/lib/arpwatch - default working directory
list - file containing names of hosts to query
cname - file containing the SNMP community name by which to query
.ad
.hy
.fi
.SH "SEE ALSO"
.na
.nh
.BR arpsnmp (8),
.BR arpfetch(8),
.BR snmpwalk (8),
.BR cron (8)
.ad
.hy
.SH BUGS
Please send bug reports to arpwatch@ee.lbl.gov.
.SH AUTHORS
Craig Leres of the
Lawrence Berkeley National Laboratory Network Research Group,
University of California, Berkeley, CA.
.LP
The current version is available via anonymous ftp:
.LP
.RS
.I ftp://ftp.ee.lbl.gov/arpwatch.tar.gz
.RE
.LP
This manual page was contributed by Hugo Graumann.